Question

When a single dice is rolled, what is the probability of getting a prime number?

• A. $\frac{1}{6}$
• B. $\frac{1}{2}$
• C. $\frac{2}{6}$
• D. $\frac{1}{3}$

Answer 1

The correct option is B $\frac{1}{2}$

The possible outcomes on rolling a single dice are 1, 2, 3, 4, 5, 6.
Out of these possibilities, the prime numbers are 2, 3, 5.
Therefore, the probability of getting a prime number is $=\frac{Nooffavourableoutcomes}{Totalnoofoutcomes}=\frac{3}{6}=\frac{1}{2}.$

Therefore, the probability of getting prime number when a single dice is rolled is $\frac{1}{2}.$